arch/arm/mach-omap2/board-omap3evm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3evm.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/input.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/ads7846.h>
  25
  26 #include <mach/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <linux/io.h>
  31 #include <linux/delay.h>
  32
  33 #include <mach/gpio.h>
  34 #include <mach/keypad.h>
  35 #include <mach/board.h>
  36 #include <mach/hsmmc.h>
  37 #include <mach/usb-musb.h>
  38 #include <mach/usb-ehci.h>
  39 #include <mach/common.h>
  40 #include <mach/mcspi.h>
  41
  42 #include "sdram-micron-mt46h32m32lf-6.h"
  43
  44 static struct resource omap3evm_smc911x_resources[] = {
  45         [0] =   {
  46                 .start  = OMAP3EVM_ETHR_START,
  47                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  48                 .flags  = IORESOURCE_MEM,
  49         },
  50         [1] =   {
  51                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  52                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  53                 .flags  = IORESOURCE_IRQ,
  54         },
  55 };
  56
  57 static struct platform_device omap3evm_smc911x_device = {
  58         .name           = "smc911x",
  59         .id             = -1,
  60         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  61         .resource       = &omap3evm_smc911x_resources [0],
  62 };
  63
  64 static inline void __init omap3evm_init_smc911x(void)
  65 {
  66         int eth_cs;
  67         struct clk *l3ck;
  68         unsigned int rate;
  69
  70         eth_cs = OMAP3EVM_SMC911X_CS;
  71
  72         l3ck = clk_get(NULL, "l3_ck");
  73         if (IS_ERR(l3ck))
  74                 rate = 100000000;
  75         else
  76                 rate = clk_get_rate(l3ck);
  77
  78         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  79                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  80                         OMAP3EVM_ETHR_GPIO_IRQ);
  81                 return;
  82         }
  83
  84         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  85 }
  86
  87 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  88         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  89 };
  90
  91 static int __init omap3_evm_i2c_init(void)
  92 {
  93         omap_register_i2c_bus(1, 2600, NULL, 0);
  94         omap_register_i2c_bus(2, 400, NULL, 0);
  95         omap_register_i2c_bus(3, 400, NULL, 0);
  96         return 0;
  97 }
  98
  99 static struct platform_device omap3_evm_lcd_device = {
 100         .name           = "omap3evm_lcd",
 101         .id             = -1,
 102 };
 103
 104 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 105         .ctrl_name      = "internal",
 106 };
 107
 108 static struct platform_device omap3_evm_twl4030rtc_device = {
 109         .name           = "twl4030_rtc",
 110         .id             = -1,
 111 };
 112
 113 static void ads7846_dev_init(void)
 114 {
 115         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 116                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 117
 118         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 119
 120         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 121         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 122 }
 123
 124 static int ads7846_get_pendown_state(void)
 125 {
 126         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 127 }
 128
 129 struct ads7846_platform_data ads7846_config = {
 130         .x_max                  = 0x0fff,
 131         .y_max                  = 0x0fff,
 132         .x_plate_ohms           = 180,
 133         .pressure_max           = 255,
 134         .debounce_max           = 10,
 135         .debounce_tol           = 3,
 136         .debounce_rep           = 1,
 137         .get_pendown_state      = ads7846_get_pendown_state,
 138         .keep_vref_on           = 1,
 139         .settle_delay_usecs     = 150,
 140 };
 141
 142 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 143         .turbo_mode     = 0,
 144         .single_channel = 1,  /* 0: slave, 1: master */
 145 };
 146
 147 struct spi_board_info omap3evm_spi_board_info[] = {
 148         [0] = {
 149                 .modalias               = "ads7846",
 150                 .bus_num                = 1,
 151                 .chip_select            = 0,
 152                 .max_speed_hz           = 1500000,
 153                 .controller_data        = &ads7846_mcspi_config,
 154                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 155                 .platform_data          = &ads7846_config,
 156         },
 157 };
 158
 159 static int omap3evm_keymap[] = {
 160         KEY(0, 0, KEY_LEFT),
 161         KEY(0, 1, KEY_RIGHT),
 162         KEY(0, 2, KEY_A),
 163         KEY(0, 3, KEY_B),
 164         KEY(1, 0, KEY_DOWN),
 165         KEY(1, 1, KEY_UP),
 166         KEY(1, 2, KEY_E),
 167         KEY(1, 3, KEY_F),
 168         KEY(2, 0, KEY_ENTER),
 169         KEY(2, 1, KEY_I),
 170         KEY(2, 2, KEY_J),
 171         KEY(2, 3, KEY_K),
 172         KEY(3, 0, KEY_M),
 173         KEY(3, 1, KEY_N),
 174         KEY(3, 2, KEY_O),
 175         KEY(3, 3, KEY_P)
 176 };
 177
 178 static struct omap_kp_platform_data omap3evm_kp_data = {
 179         .rows           = 4,
 180         .cols           = 4,
 181         .keymap         = omap3evm_keymap,
 182         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 183         .rep            = 1,
 184 };
 185
 186 static struct platform_device omap3evm_kp_device = {
 187         .name           = "omap_twl4030keypad",
 188         .id             = -1,
 189         .dev            = {
 190                                 .platform_data = &omap3evm_kp_data,
 191                         },
 192 };
 193
 194 static void __init omap3_evm_init_irq(void)
 195 {
 196         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 197         omap_init_irq();
 198         omap_gpio_init();
 199         omap3evm_init_smc911x();
 200 }
 201
 202 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 203         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 204         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 205 };
 206
 207 static struct platform_device *omap3_evm_devices[] __initdata = {
 208         &omap3_evm_lcd_device,
 209         &omap3evm_kp_device,
 210 #ifdef CONFIG_RTC_DRV_TWL4030
 211         &omap3_evm_twl4030rtc_device,
 212 #endif
 213         &omap3evm_smc911x_device,
 214 };
 215
 216 static void __init omap3_evm_init(void)
 217 {
 218         omap3_evm_i2c_init();
 219
 220         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 221         omap_board_config = omap3_evm_config;
 222         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 223
 224         spi_register_board_info(omap3evm_spi_board_info,
 225                                 ARRAY_SIZE(omap3evm_spi_board_info));
 226
 227         omap_serial_init();
 228         hsmmc_init();
 229         usb_musb_init();
 230         usb_ehci_init();
 231         omap3evm_flash_init();
 232         ads7846_dev_init();
 233 }
 234
 235 static void __init omap3_evm_map_io(void)
 236 {
 237         omap2_set_globals_343x();
 238         omap2_map_common_io();
 239 }
 240
 241 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 242         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 243         .phys_io        = 0x48000000,
 244         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 245         .boot_params    = 0x80000100,
 246         .map_io         = omap3_evm_map_io,
 247         .init_irq       = omap3_evm_init_irq,
 248         .init_machine   = omap3_evm_init,
 249         .timer          = &omap_timer,
 250 MACHINE_END